1906,] IN MEXICAN LIZARDS. 343 



6 specimens collected by Forrer are related to the Tepic and 

 Jalisco Gnemidophorus. They possess 6 white or whitish stiipes, 

 with faint field-spots which increase in number with age. There 

 is no trace of a fourth pair of stripes, and no breaking-up of the 

 stripes into spots is indicated, not even in the largest specimens. 

 The throat is sometimes speckled with dark pigment ; chest and 

 abdomen are chequered blue-black and white. The tail is reddish 

 beneath. 



Zcifotlan in Jalisco, between Guadalajara and Oolima. (Text- 

 fig. 77 A.) — Throat across~-the middle with a dull bluish tinge; 

 lower throat whitish, and mottled with grey. Collar bluish, 

 except the large row of scales which is white. Upper chest blue 

 with white edges to the scales. Rest of body black, chequered 

 with white. Tail beneath very dark, all the whitish scales having 

 much blue-black pigment. Under surface of arms blue-black with 

 whitish patches. — Upper parts : — First specimen : 6 complete 

 dull stripes ; mid-field dark grey, bordered on each side by a row 

 of black spots. Fields I. and II. black, with irregular rows of 

 large, round, grey spots. None of the stripes is dissolved into 

 spots, but whiter spots are visible in the second stripe. 



The second specimen is beautiful. There are no traces of 

 stripes left. Neck and shoulders are dusky. The whole back 

 shows about 10 rows of large round yellowish- white spots upon a 

 dark ground. Smaller yellow spots on the rump, thighs, legs, 

 and upon the first two inches of the tail. On the sides of the 

 chest the black colour forms cross-bars because the rows of lai'ge 

 pale spots below the first stripe are transversely confluent. This 

 specimen conforms exactly with Cope's typical C. communis, 

 whilst the first, also a male, scarcely shows the characteristic 

 development of spots within the stripes'. Unfortunately I did 

 not catch a single specimen at or near Zapotlan, but I saw several 

 in the striped and in the spotted condition. 



Tuxpan (text-fig. 79 A), south of Zapotlan. — Fourth supraocular 

 very small. Throat tinged with bluish across the middle ; collar 

 bluish white. Rest of under parts, including arms and thighs, 

 dark blue with some white specks on the flanks. Tail blue all 

 round. The ground-colour of the upper parts olive-brown, with 

 6 dull stripes, each of which is broken up into whitish beads. 

 The first and second fields with conspicuous black cross-patches. 

 Mid-field olive-brown, with a few small black specks along the 

 inside of the third pair of stripes. Numerous small, whitish 

 spots on rump, thighs, and tail, and a few such spots in the second 

 field. 



This specimen, having lost most of the small white spots on 

 the back, in conformity with the prevalence of olive -brown 

 ground-colour, is in the incipient tiger-stage, connecting in this 

 respect the Oolima specimen (C communis cojyei) with the 88 mm, 

 specimen from Patzcuaro (text-fig. 77 B). 



Fuebla. Nine specimens collected by Dr. Meek near the town 

 of Puebla on the railway embankments. — Throat and collar white 



